Real-time Evaluation System Research Articles

Oris: a tool for modeling, verification and evaluation of real-time systems

Oris is a tool for qualitative verification and quantitative evaluation of reactive timed systems, which supports modeling and analysis of various classes of timed extensions of Petri Nets. As most characterizing features, Oris implements symbolic state space analysis of preemptive Time Petri Nets, which enable schedulability analysis of real-time systems running under priority preemptive scheduling; and stochastic Time Petri Nets, which enable an integrated approach to qualitative verification and quantitative evaluation. In this paper, we present the current version of the tool and we illustrate its application to two different case studies in the areas of qualitative verification and quantitative evaluation, respectively.

Mobile merchandise evaluation service using novel information retrieval and image recognition technology

Consumers’ purchasing behavior has obviously changed in recent years with developments in social economics. This change has been evident in the decreased ratio of planned purchases but not in the increase of planned (or spontaneous) purchases. This act of spontaneous or otherwise unplanned purchasing is called “impulse buying”. However, buying under these conditions costs more money always comes with negative responses, such as complaints and regret. Therefore, we propose and have designed a new merchandise recommendation system, the Mobile Merchandise Evaluation Service Platform (MMESP). This is a three-tier system composed of Real-time Merchandise Identifying System (RMIS), Real-time Merchandise Evaluation System (RMES), and Real-time Merchandise Recommendation System (RMRS). With this system, Mobile Users (MUs) take pictures of merchandise and send them to MMESP, RMIS integrates Region Adjacency Graph (RAG) and Self-Organizing Maps (SOM) to gather information on the merchandise through those photographs, and. RMES and RMRS provide Intelligence Agents (IAs) and Multiple Document Summarization (MDS) to summarize recommendations on merchandise for MUs, all in real time.

A novel model for endometriosis

Human uterine endometrium has unique properties to regenerate and remodel cyclically throughout the woman's reproductive life and also gives rise to endometriosis through ectopic implantation of retrograde shedding including endometrial cells during menstruation. Endometriosis is a common and significant gynecological disorder which can lead to infertility or a certain type of ovarian cancer. However, the etiology and pathogenesis still remain uncertain. Previously, we have reported that singly dispersed cells isolated directly from human endometrium can reconstruct the functional ectopic endometria when transplanted beneath the kidney capsule of the NOD/SCID/γcnull immunodeficient mouse. In addition to the endometrium-like structure, hormone-dependent changes (e.g. proliferation, differentiation, tissue breakdown and shedding) characteristic of cycling human endometrium can be reproduced in the endometrial reconstruct whose blood is supplied by human-mouse chimeric vessels. These results indicate that singly dispersed endometrial cells have potential applications for tissue reconstitution, angiogenesis, and human-mouse chimeric vessel formation, providing implications for model mechanisms underlying the establishment of endometriotic lesions and the physiological endometrial regeneration during the menstrual cycle. Furthermore, the hormone-dependent behavior of the endometrium reconstructed from lentivirally-engineered endometrial cells expressing a variant luciferase can be assessed noninvasively and quantitatively by in vivo bioluminescence imaging. Our animal model will provide a powerful tool to investigate the pathophysiology of endometriosis and also to validate the effect of novel therapeutic agents and gene targeting on endometriosis with the noninvasive and real-time evaluation system. This animal system can be applied as a unique model for other various types of neoplastic diseases when the relevant cells are transplanted under the kidney capsule. This article describes our novel mouse model and in vivo imaging system with overviews of experimental models for endometriosis.

EFFECTS OF SEVERE HEMORRHAGE ON IN VIVO BRAIN AND SMALL INTESTINE MITOCHONDRIAL NADH AND MICROCIRCULATORY BLOOD FLOW

Severe body stress induced by hypoxemia and hypotension may lead to total body energy state deterioration. The perfusion of the most vital organs is maintained at the expense of "less vital" organs. In the present study, we used a multi-site multi-parametric (MSMP) monitoring system for real-time evaluation of tissue blood flow (TBF) and mitochondrial NADH fluorescence of the brain and the small intestine following hemorrhage. In Group 1, uncontrolled hemorrhage, mean arterial pressure (MAP) was decreased to 40 mmHg within 2 minutes and shed blood was re-infused after 30 minutes. In Group 2, controlled hemorrhage, during the 30 minutes of hemorrhage, MAP was kept at 40 mmHg. During hemorrhage, in both groups, the intestinal TBF and NADH deteriorated, while the brain remained relatively well protected. In Group 1, all parameters partly recovered within the hemorrhage phase, while in Group 2, complete recovery occurred only after resuscitation. At the end of the experiment, both models showed a decrease in intestinal viability (TBF decreased, NADH increased), while the brain metabolic state in Group 2 declined slightly. Our unique multi-parametric monitoring device demonstrated that, under hemorrhage, the small intestine responded entirely differently from the brain. This may suggest the potential usefulness of the monitoring of less vital organs, as proxy organs, in critical conditions such as massive hemorrhage. The present study also highlights the importance of mitochondrial function monitoring in similar conditions in the clinical environment.

Perancangan dan Konstruksi Mesin Sortasi dan Pemutuan Buah Jeruk dengan Sensor Kamera CCD

Citrus is one of important fruits in Indonesia and its production increases every year. However, postharvest equipment for citrus is very limited, leading to low postharvest technology utilization. The objective of this research was to develop a real-time quality evaluation system using a color CCO camera, to be used as an image sensor and processing unit for quality evaluation of the citrus from acquired image. The system consists of a color CGO camera, a computer with an image frame grabber, an image acquisition chamber, a logic control panel, and a software to run all the installed hardware Some important parameters of visual quality of citrus were studied. Five groups of different quality of citrus, obtained from a big trader in Pasar Induk Kramatjati, were used for samples. The images were captured and then analyzed with image processing program using area projectio and RGB and HSI color model algorithms, for the fruit size and color respectively. The results were analyzed to determine whether there were parameters that correlates with weight, sweetness and firmness, to be used for quality evaluation. Visual parameters that figures the real quality of citrus best were then selected to be used for quality parameters to develop a real-time quality evaluation system for citrus in the next step.Keywords: image processing, sortasi, pemutuan, otomatis Diterima: 15 Oktober 2007; Disetujui: 18 Pebruari 2008

Adaptive State-of-Charge Indication System for Li-ion Battery-Powered Devices

An algorithm that combines adaptive system with Electro-Motive-Force (EMF) measurements during equilibrium and current measurement and integration during (dis)charge states has been implemented in a real-time SoC evaluation system. During the discharge state also the effect of the overpotential is considered. The overpotential model includes a variety of parameters that are changing during cycling of the battery. Adaptive methods for the battery maximum capacity and for the overpotential model parameters are presented in this paper. The final aim is to predict the SoC and the remaining run-time of a Li-ion battery within 1% inaccuracy under all realistic user conditions.

Real-time evaluation system of antithrombogenicity of materials under shear flow conditions

Real-time evaluation system of antithrombogenicity of materials under shear flow conditions

A methodology for design, test, and evaluation of real-time systems

This article presents a methodology that is suitable for use as part of either a prototyping approach or a component-reuse approach. This methodology integrates modeling and simulation as well as developmental and operational testing over the life cycle. The type of systems or components we address operate in real time. Designing and testing real-time systems involves the use of multiple processors and communication links. The real-time system itself can run on a single processor or multiple processors. Even when the system runs on a single processor, the test and evaluation environment uses multiple processors. If the evaluation environment were hosted on the system processor, system performance would be affected. For ease of exposition, we focus on sensor systems; the methodology described is widely applicable to other kinds of systems. We use two examples (a space-borne navigation system and an interferometer system) to describe the methodology and show how it can be used. This methodology can reduce project costs and shorten schedules because it requires performance evaluation and integration testing early, when problems are generally easier and less costly to correct.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>

Expert overseer for mass spectrometer system

An expert overseer for the operation and real-time management of a mass spectrometer and associated laboratory equipment. The overseer is a computer-based expert diagnostic system implemented on a computer separate from the dedicated computer used to control the mass spectrometer and produce the analysis results. An interface links the overseer to components of the mass spectrometer, components of the laboratory support system, and the dedicated control computer. Periodically, the overseer polls these devices and as well as itself. These data are fed into an expert portion of the system for real-time evaluation. A knowledge base used for the evaluation includes both heuristic rules and precise operation parameters. The overseer also compares current readings to a long-term database to detect any developing trends using a combination of statistical and heuristic rules to evaluate the results. The overseer has the capability to alert lab personnel whenever questionable readings or trends are observed and provide a background review of the problem and suggest root causes and potential solutions, or appropriate additional tests that could be performed. The overseer can change the sequence or frequency of the polling to respond to an observation in the current data.

A real-time video signal processor suitable for motion picture coding applications

A real-time video signal processor (VSP) system has been developed. The system employs three multiprocessor clusters, each of which has 12 video signal processor modules (VSPMs). A VSPM in a cluster processes its assigned subimage by using an overlap-save technique. Each cluster uses the same multiprocessor structure, in which homogeneous processor modules are connected to input, output, and feedback buses in parallel and two bus switch units. By controlling these units, the clusters can be combined in pipeline and/or parallel forms. Each cluster also uses a variable delay unit which achieves up to one frame delay on the feedback bus. By using this unit, interframe processing can be carried out without using internal data memories in VSPMs for the frame delay. The employment of the bus switches and the variable delay unit increases flexibility for a variety of signal processing algorithms. The system performs 500 million operations per second and is currently used as a real-time evaluation system for low-bit-rate picture encoders. >